Mouthpiece with an enhanced spraying effect, and portable nebulizer thereof

ABSTRACT

The present disclosure discloses a mouthpiece with an enhanced spraying effect, comprising: an aerosol inflow port, and an aerosol outflow port; wherein an aerosol passage is formed between the aerosol inflow port and the aerosol outflow port, such that in a spraying state, the aerosol enters the aerosol passage from the aerosol inflow port and is discharged from the aerosol outflow port; a main air inlet is provided at a bottom wall or a top wall of the mouthpiece, the main air inlet being in communication with the aerosol passage; and an ancillary air inlet is further provided at an opposite side of the main air inlet, the ancillary air inlet being in communication with the aerosol passage. The present disclosure further discloses a portable nebulizer having the mouthpiece above. The present disclosure provides an advantage of effectively enhancing the spraying effect of the nebulizer.

CROSS REFERENCES TO RELATED APPLICATIONS

This application claims priority to and incorporates by reference U.S.Patent Application No. 62/876,385 filed Jul. 19, 2019.

FIELD

The present disclosure relates to the field of medical equipment, andmore particularly relates to a mouthpiece with an enhanced sprayingeffect, and a portable nebulizer.

BACKGROUND

Nebulizers are very common medical equipment in modern medicine.Nebulizers are provided in varieties, a most common one of which is amask-type nebulizer used in hospitals. As such nebulizers areinconvenience to carry, the market provides a kind of portablenebulizer.

SUMMARY

Embodiments provide a mouthpiece that may effectively improve thespraying effect of nebulizers.

In an embodiment, a mouthpiece with an enhanced spraying effectcomprises an aerosol inflow port and an aerosol outflow port; wherein anaerosol passage is formed between the aerosol inflow port and theaerosol outflow port, such that in a normal spraying state, the aerosolenters the aerosol passage from the aerosol inflow port and isdischarged from the aerosol outflow port; a main air inlet is providedat a bottom wall or a top wall of the mouthpiece, the main air inletbeing in communication with the aerosol passage; an ancillary air inletis further provided at an opposite side of the main air inlet, theancillary air inlet being in communication with the aerosol passage.

An aerosol passage is provided inside the mouthpiece. When a relativelylarge amount of aerosol is present in the mouthpiece, some small-sizedcondensation will be condensed into relatively large-sized condensation.As a main air inlet is provided at the top wall or the bottom wall ofthe mouthpiece, the gaseous aerosol will be pushed onto the innersurface of the mouthpiece upon air inletting. For example, when the mainair inlet is provided at the bottom wall, the gaseous aerosol is easilypushed onto the inner surface of the top wall of the mouthpiece, suchthat a large amount of aerosol is concentrated on the inner surface ofthe top wall, which easily causes too much aerosol to be adsorbed ontothe inner surface without getting to the user's mouth. However, byproviding an ancillary air inlet, the air amount will surely increase,facilitating the aerosol to be rapidly delivered into the user's mouth.

Moreover, by providing the ancillary air inlet at the opposite side ofthe main air inlet, inlet air flow is generated at both of the top walldirection and the bottom wall direction of the mouthpiece, such that theair flow inside the mouthpiece is more concentrated in a middle areabetween the inner surface of the top wall and the inner surface of thebottom wall, causing the aerosol to be kept from the inner surface ofthe top wall and the inner surface of the bottom wall of the mouthpieceas far as possible.

The diameter of gaseous particles of existing aerosol is substantiallybetween 1 micron and 5 microns; while an actual effective gaseousparticle diameter is about 3 microns, because when the gaseous particleshave a diameter of about 1 micron, the too small diameter causes thegaseous particles to be exhaled easily when breathing, such that theycannot enter into the body; when the gaseous particles have a diameterof about 4 microns, they generally can only reach the throat; while whenthe gaseous particles have a diameter of about 5 microns, the largerdiameter causes these gaseous particles to substantially only reside inthe mouth and are unable to be inhaled into the lung. In actual tests,it is found that the gaseous particles with a diameter of about 3microns are most appropriate and effective, which may be inhaled intothe lungs but can be hardly exhaled during breathing.

In an embodiment, the mouthpiece comprises a first end wall and a secondend wall, which are disposed opposite to each other, wherein the aerosolinflow port is disposed at the first end wall, the aerosol outflow portis disposed at the second end wall, and a maximum distance between theancillary air inlet and the first end wall does not exceed 4.5 cm.

In an embodiment, a minimum distance between the ancillary air inlet andthe first end wall is no less than 1.2 cm.

In an embodiment, the ancillary air inlet has a D shape.

In an embodiment, the ancillary air inlet is provided at the top wall ofthe mouthpiece, and a stopper member is provided on the inner surface ofthe top wall of the mouthpiece and extends along two ends of theancillary inlet towards two sides of the mouthpiece, respectively.

In an embodiment, the stopper member is a diverting groove or adiverting convex rib.

In an embodiment, the outer appearance of the aerosol outflow port is ofa rectangular, round or oval shape.

In an embodiment a portable nebulizer comprises a housing, a nebulizeunit provided in the housing, and a mouthpiece movably mounted on thehousing, wherein the mouthpiece refers to the mouthpiece in any solutionabove, and in a normal spraying state, the aerosol inflow port is fittedto the nebulize unit.

In an embodiment, a receiving groove is provided on the housing, suchthat when the nebulizer is in a non-spraying state, the mouthpiece isreceived in the receiving groove, and when the nebulizer is in aspraying state, the mouthpiece is opened and has a working anglerelative to the housing.

In an embodiment, the working angle ranges from 70° to 95°.

These characteristics and advantages of the present disclosure will bedescribed in detail through the illustrated embodiments and theaccompanying drawings below.

BRIEF DESCRIPTION OF THE DRAWINGS

Hereinafter, the present disclosure will be described in further detailwith reference to the accompanying drawings:

FIG. 1 is a schematic diagram of a mouthpiece in Embodiment 1 of thepresent disclosure in a received state;

FIG. 2 is a schematic diagram of the mouthpiece in Embodiment 1 of thepresent disclosure in a normal spraying state;

FIG. 3 is a side schematic diagram of the mouthpiece in Embodiment 1 ofthe present disclosure in a normal spraying state;

FIG. 4 is a first structural schematic view of the mouthpiece inEmbodiment 1 of the present disclosure;

FIG. 5 is a second structural schematic view of the mouthpiece inEmbodiment 1 of the present disclosure;

FIG. 6 is an internal structural schematic view of the mouthpiece inEmbodiment 1 of the present disclosure;

FIG. 7 is a backflow schematic view of condensation in Embodiment 1 ofthe present disclosure;

FIG. 8 is a structural schematic view of a bottom wall inner surface ofthe mouthpiece in Embodiment 1 of the present disclosure;

FIG. 9 is an internal air flow schematic view of the mouthpiece inEmbodiment 1 of the present disclosure;

FIG. 10 is a structural schematic view of a stopper member in Embodiment2 of the present disclosure;

FIG. 11 is a schematic view of a shape of an aerosol outflow port of themouthpiece in Embodiment 3 of the present disclosure;

FIG. 12 is a flowchart illustrating a method of operating a nebulizerwith a mouthpiece of any of the embodiments .

DETAILED DESCRIPTION

Hereinafter, the technical solutions of the embodiments of the presentdisclosure will be explained and illustrated with reference to theaccompanying drawings corresponding to the embodiments of the presentdisclosure. Other embodiments obtained by those skilled in the artwithout exercise of inventive work based on the examples in theembodiments all fall within the protection scope of the presentdisclosure.

In the description below, the orientation or position relationshipsindicated by the terms “inner,” “outer,” “upper,” “lower,” “left,” and“right,” etc. are intended only for facilitating or simplifyingdescription of the present disclosure, not for indicating or implyingthat the devices or elements have to possess those specific orientationsand have to be configured and operated with those specific orientations;therefore, they should not be understood as limitations to the presentdisclosure.

FIGS. 1-9 show an embodiment of a mouthpiece 2. FIGS. 1-3 are schematicdiagrams of the mouthpiece 2 mounted on a housing 1 of the nebulizer;the mouthpiece 2 according to this embodiment comprises an aerosolinflow port 201 and an aerosol outflow port 202; wherein an aerosolpassage is formed between the aerosol inflow port 201 and the aerosoloutflow port 202; a main air inlet 203 is further provided on themouthpiece 2, the main air inlet 203 being in communication with theaerosol passage, such that in a spraying state, the aerosol produced bya nebulize unit in the nebulizer enters the aerosol passage from theaerosol inflow port 201 and is discharged from the aerosol outflow port202, wherein a mouth of a user is fitted with the aerosol outflow port202 such that the aerosol is inhaled into the human body.

Additionally, as mentioned above, in order to increase the air amount,an ancillary air inlet 204 is provided through the inner side surface ofthe mouthpiece 2 in this embodiment. More specifically, the main airinlet 203 may be disposed at the bottom wall 200 d of the mouthpiece 2,while the ancillary air inlet 204 is may be disposed at a top wall 200 cof the mouthpiece 2. A purpose of providing the ancillary air inlet 204on the top wall 200 c of the mouthpiece 2 is to increase the air amount,which facilitates pushing forward the air flow; meanwhile, because theair inlets are disposed at the top wall 200 c and the bottom wall 200 dof the mouthpiece 2, the air flow in the mouthpiece 2 is moreconcentrated in an area between the inner surface of the top wall 200 cand the inner surface of the bottom wall 200 d, such that the aerosolshould be kept away from the top wall 200 c and the bottom wall 200 d asmuch as possible, and more aerosol may reach into the user's mouth,instead of being adsorbed to the inner surface of the mouthpiece 2. Fordetails, please refer to the air flow schematic diagram of FIG. 9.

An initial purpose of providing the ancillary air inlet 204 on the topwall 200 c of the mouthpiece 2 is to increase the air amount; however,many experiments show that an unexpected effect may be caused byproviding the ancillary air inlet 204 there. The diameter of gaseousparticles of existing aerosol is substantially between 1 micron and 5microns; while an actual effective gaseous particle diameter is about 3microns, because when the gaseous particles have a diameter of about 1micron, the too small diameter causes the gaseous particles to beexhaled easily when breathing, such that they cannot enter into thebody; when the gaseous particles have a diameter of about 4 microns,they generally can only reach the throat; while when the gaseousparticles have a diameter of about 5 microns, the larger diameter causesthese gaseous particles to substantially only reside in the mouth andunable to be inhaled into the lung. In actual tests, it is found thatthe gaseous particles with a diameter of about 3 microns is mostappropriate and effective, which may be inhaled into the lungs but canbe hard to exhale during breathing.

Further, in this embodiment, after the ancillary air inlet 204 isdisposed at the top wall 200 c of the mouthpiece 2, many tests find thatmost of the gaseous particles of the aerosol discharged from the aerosoloutflow port 202 have a diameter of about 3 microns. Such kind ofaerosol is easily inhaled into the lung, which may significantly enhancethe treatment efficacy of the nebulizer.

Additionally, many tests show that the ancillary air inlet 204 may bedisposed at a side adjacent to the aerosol inflow port 201. Generally, amaximum distance D1 between the ancillary air inlet 204 and the firstend wall 200 a does not exceed 4.5 cm; when the distance exceeds 4.5 cm,the gaseous particles with a diameter of around 3 microns among thegaseous particles produced at the aerosol outflow port 202 decreasesignificantly.

Meanwhile, a minimum distance D2 between the ancillary air inlet 204 andthe first end wall 200 a is no less than 1.2 cm. If the minimum distanceis too short, the ancillary air inlet 204 of the mouthpiece 2 top wall200 c will be blocked by the housing 1 in a spraying state, such that itcannot play a function of assisting air inlet.

Additionally, the ancillary air inlet 204 in this embodiment has a Dshape. Tests show that with the ancillary air inlet 204 of this shape,the air flow inside the mouthpiece 2 is more stable, and more gaseousparticles with a diameter of around 3 microns will be produced. Ofcourse, in other embodiments, the ancillary air inlet may be of arectangular, oval or triangular shape.

Additionally, to improve the anti-backflow effect of the mouthpiece, atleast one temporary liquid reservoir 21 is provided in the mouthpiece 2in this embodiment; when the aerosol condensation flows back to theaerosol inflow port 201, at least part of the aerosol condensation flowsback inside the temporary liquid reservoir 21.

An aerosol passage is provided inside the mouthpiece 2. When arelatively large amount of aerosol is present in the mouthpiece, somesmall-sized condensation will be condensed into relatively large-sizedcondensation; when the nebulizer is shaken or moved to another location,the aerosol condensation in the mouthpiece 2 likely flows back, i.e.,likely flowing back inside the aerosol inflow port 201; further, theaerosol inflow port 201 is fitted to the nebulize unit; if thecondensation flows back to the aerosol inflow port 201, it very likelyflows to the nebulize unit, thereby being pooled on the nebulize unit;in this embodiment, a temporary liquid reservoir 21 for reducing ormitigating flowback of the condensation to the aerosol inflow port 201is provided in the mouthpiece 2; with this design, when flowback of theaerosol occurs, at least part of the aerosol will flow back into thetemporary liquid reservoir 21, thereby significantly reducing theaerosol flowing back to the aerosol inflow port 201 and further reducingthe odds of being pooled on the nebulize unit.

As shown in FIGS. 4 and 5, the mouthpiece 2 in this embodiment issubstantially in an elongated cubic shape. The mouthpiece 2 comprises afirst end wall 200 a and a second end wall 200 b which are oppositelyarranged; the aerosol inflow port 201 is disposed at the first end wall200 a; the aerosol outflow port 202 is disposed at the second end wall200 b; as further shown in FIGS. 6 and 7, the temporary liquid reservoir21 and the aerosol inflow port 201 are both disposed at the first endwall 200 a, such that the structure of the temporary liquid reservoir 21may not disrupt the air flow direction inside the mouthpiece 2; if theyare disposed on the other inner surface, there may have a hidden risk ofdisrupting the air flow. Of course, if disruption of the air flow isignored, the temporary liquid reservoir 21 may be provided on otherinner side surface in other embodiments.

Additionally, to better divert the pooled liquid, the aerosol inflowport 201 is disposed at a middle position of the first end wall 200 a.The temporary liquid reservoir 21 is provided in two. The two temporaryliquid reservoirs 21 are disposed at two different sides of the aerosolinflow port 201, such that when the condensation flows back, it may bediverted to the two sides more uniformly, instead of collectivelyflowing back into one temporary liquid reservoir 21 thereof, therebyproviding a better diverting effect.

Additionally, to further enhance the condensation anti-flowback effect,a stopper member 22 for stopping the condensation from flowing back tothe aerosol inflow port 201 is provided on an inner side surface of themouthpiece 2. By providing the stopper member 22, when the condensationflows back towards the aerosol inflow port 201 from the aerosol outflowport 202, the condensation will be stopped by the stopper member 22,thereby stopping or delaying the condensation from flowing towards theaerosol inflow port 201. The structure and shape of the stopper member22 are provided in varieties, and this embodiment selects one therefrom,as shown in FIGS. 6 and 7.

In this embodiment, the stopper member 22 comprises a diverting groovedisposed on the inner side surface of the mouthpiece 2; one end of thediverting groove extends towards the temporary liquid reservoir 21; thediverting groove plays a role of partitioning the smooth inner surfaceof the mouthpiece 2, such that when the condensation flows back to thediverting groove, if the amount is small, the condensation is directedto the temporary liquid reservoir 21 along an edge of the divertinggroove; if the amount is relatively large, the condensation directlyenters inside the diverting groove and then is directed to the temporaryliquid reservoir 21.

To further prevent the condensation from flowing back to the nebulizeunit, this embodiment further improves the aerosol inflow port 201; in aspraying state, a bottom wall 200 d is provided at one side of themouthpiece 2 towards the housing 1, and an opening of the aerosol inflowport is through from an end wall of the mouthpiece 2 to an outer surfaceof the bottom wall 200 d of the mouthpiece 2. Such a design has apurpose that when the condensation flows back to the aerosol inflow port201, part of the condensation directly flows out downwardly from thebottom wall 200 d instead of flowing onto the nebulize unit, such thatless pooling is produced on the nebulize unit.

Additionally, in this embodiment, besides providing a main air inlet 203on the mouthpiece 2, an ancillary air inlet 204 is further providedthrough an inner side surface of the mouthpiece 2. By providing theancillary air inlet 204, an air amount increases; further, by providingthe ancillary air inlet 204 through the inner side surface, a partitionis formed on the inner side surface, which may further play a role ofstopping the back-flowing condensation. In this embodiment, as mentionedabove, the stopper member 22 comprises two diverting grooves. The twodiverting grooves extend to the temporary liquid reservoir 21 from twosides of the ancillary air inlet 204, respectively; in this embodiment,the ancillary air inlet 204 and the two diverting grooves form anisolated area, and the aerosol inflow port 201 is just disposed in theisolated area, while the temporary liquid reservoir 21 is disposedoutside of the isolated area. In this way, when the condensation flowsback to the first end wall 200 a, it is substantially stopped outsidethe isolated area and substantially does not enter the isolated area.

Moreover, it needs to be noted that the main air inlet 203 of themouthpiece 2 may be disposed at the bottom wall 200 d of the mouthpiece2; because the main air inlet 203 is provided through the bottom wall200 d inner surface of the mouthpiece 2 and the main air inlet 203 inthis embodiment is disposed at a relatively middle position; when thecondensation flows back, the main air inlet 203 may also stop thecondensation from the bottom wall 200 d of the mouthpiece 2 and directthe condensation to flow towards the temporary liquid reservoirs 21 attwo sides.

This embodiment also improves a forward flow direction of condensationin the mouthpiece 2. The forward flow direction here refers to adirection from the aerosol inflow port 201 towards the aerosol outflowport 202. An aerosol passage is provided inside the mouthpiece 2. When arelatively large amount of aerosol is present in the mouthpiece 2, somesmall-sized condensation will be condensed into relatively large-sizedcondensation; the mouthpiece 2 tends to tilt towards the user from timeto time when in normal use, such that the condensation also tends toflow towards the aerosol outflow port 202.

An outflow stopper 23 is provided on a bottom wall 200 d inner surfaceof the mouthpiece 2; it needs to be noted that the top wall 200 c andthe bottom wall of the mouthpiece 2 are described when the mouthpiece 2is in a spraying state. The condensation of the aerosol is stopped bythe outflow stopper 23 when flowing towards the aerosol outflow port202. By providing the outflow stopper 23, most of the condensationremains inside the mouthpiece 2 instead of directly flowing into theuser's mouth, specifically referring to FIGS. 8 and 9.

The outflow stopper 23 in this embodiment comprises an outflow stoppingconvex rib protruding from a bottom wall 200 d inner surface of themouthpiece 2; the protruded outflow stopping convex rib may have abetter flow stopping effect. The protrusion height of the outflowstopping convex rib ranges from 1 mm˜6 mm. If the protrusion height istoo low, the flow stopping effect will be poor; if the protrusion heightis too high, an air flow inside the mouthpiece 2 will be disturbed.Therefore, the protrusion height is generally may be selected to be 3 mmor 4 mm.

It needs to be noted that the outflow stopper 23 in this embodiment mayalso be an outflow stopping groove provided on a bottom wall 200 d innersurface of the mouthpiece 2, a structure of which is similar to thediverting groove above; a role played thereby is to partition a smoothinner surface of the mouthpiece 2 such that a flow stopping effect maybe implemented to a certain extent; when the outflow stopper 23 is anoutflow stopping groove, a depth of the outflow stopping groove rangesfrom 1 mm˜5 mm; if the depth is too shallow, the flow stopping effect ispoor; if the depth is too deep, it will be demanding on the wallthickness of the mouthpiece 2; therefore, the depth of the outflowstopping groove is may be 2 mm or 3 mm.

In this embodiment, the shape of the aerosol outflow port 202 of themouthpiece 2 is matched to the shape of the aerosol outflow port 202,i.e., a rectangular shape. However, considering that some children havesmaller mouths, such a rectangular aerosol outflow port 202 provides apoor comfort. Therefore, the shape of the aerosol outflow port 202 maybe appropriately adapted, e.g., set to be oval shown in FIG. 11.

Embodiment II

As shown in FIG. 10, the stopper member 22 in this embodiment is not adiverting groove, but a diverting convex rib. When the condensationflows back reversely, it is blocked by the diverting convex rib, therebyimplementing an effect of stopping the condensation from flowing back tothe aerosol inflow port 201.

Additionally, in this embodiment, an ancillary air inlet 204 is notdisposed on the mouthpiece 2; in this embodiment, the entire divertingconvex rib encloses an isolated area. In other words, for the isolatedarea, isolation may be implemented only with the stopper member 22. Forexample, in this embodiment, the ancillary air inlet 204 and the stoppermember 22 jointly form an isolated area, as presented in Embodiment 1.

Embodiment III

As shown in FIGS. 1-3, a portable nebulizer is provided in thisembodiment. The portable nebulizer comprises a housing 1, a nebulizeunit provided to the housing 1, and a mouthpiece 2 movably mounted onthe housing 1; in this embodiment, the mouthpiece 2 is detachablymounted to the housing 1; specifically, they may be fitted via magneticattachment. The mouthpiece 2 in this embodiment adopts the mouthpiece 2shown in Embodiment 1 or Embodiment 2 or an equivalence thereto; in thespraying state, the aerosol inflow port 201 is fitted to the nebulizeunit.

The nebulizer in this embodiment is portable such that it is very easyto carry. A receiving cavity 101 is provided on the housing 1, such thatwhen the nebulizer is in a non-spraying state, the mouthpiece 2 isreceived in the receiving cavity 101, and when the nebulizer is in aspraying state, the mouthpiece 2 is opened and has a working angle arelative to the housing 1. In other words, in the non-spraying state,the mouthpiece 2 may be received, such that the size of the entirenebulizer does not increase, while in use, the mouthpiece 2 is opened tooperate, such that it is very convenient to use.

Besides, it needs to be noted that the use angle of the nebulizer inthis embodiment is relatively free. Specifically, in the received state,the working angle a ranges from 70° to 95°, for example 85°. In such aworking angle α, it is user-friendly. The details are shown in FIG. 3.

FIG. 12 is a flowchart illustrating a method 1200 of operating anebulizer according to any of the embodiments disclosed herein. In block1210, a user removes the mouthpiece from the cavity; and reinserts, atblock 1220, the mouthpiece into the cavity in a spraying position; thenebulizer unit then nebulizes the liquid at into an aerosol at block1230 and sprays the aerosol through the mouthpiece (block 1240). Theoutflow stopper then blocks condensate exiting the outflow port (block1250) and a first liquid reservoir collects (block 1260) condensate. Inaddition, the air inlets enable air to enter the mouthpiece and mix withthe aerosol (block 1270). The method 1200 then ends. Note that theblocks in the method 1200 can be omitted and/or performed in an orderother than described (e.g., simultaneously, block 1270 before block1250, etc.).

The following examples describe various embodiments of methods andapparatuses (e.g., machines, devices, or other apparatus) discussedherein.

1. A nebulizer mouthpiece, comprising:

-   an aerosol inflow port, and-   an aerosol outflow port;-   wherein an aerosol passage is formed between the aerosol inflow port    and the aerosol outflow port, such that in a spraying state, the    aerosol enters the aerosol passage from the aerosol inflow port and    is discharged from the aerosol outflow port;-   a main air inlet is provided at a first surface of the mouthpiece,    the main air inlet being in communication with the aerosol passage;    and-   an ancillary air inlet is further provided at an opposite second    surface of the main air inlet, the ancillary air inlet being in    communication with the aerosol passage.

2. The nebulizer mouthpiece according to example 1, wherein themouthpiece comprises a first end wall and a second end wall, which aredisposed opposite to each other, wherein the aerosol inflow port isdisposed at the first end wall, the aerosol outflow port is disposed atthe second end wall, and a maximum distance between the ancillary airinlet and the first end wall does not exceed 4.5 cm.

3. The nebulizer mouthpiece according to any of the preceding examples,wherein a minimum distance between the ancillary air inlet and the firstend wall is no less than 1.2 cm.

4. The nebulizer mouthpiece according to any of the preceding examples,wherein the ancillary air inlet has a D shape.

5. The nebulizer mouthpiece according to any of the preceding examples,wherein a stopper member is provided on the second surface of themouthpiece and extends along two ends of the ancillary inlet towards twosides of the mouthpiece, respectively.

6. The nebulizer mouthpiece according to any of the preceding examples,wherein the stopper member is a diverting groove or a diverting convexrib.

7. The nebulizer mouthpiece according to any of the preceding examples,wherein the outer appearance of the aerosol outflow port is of arectangular, round or oval shape.

8. A nebulizer, comprising:

a housing,

a nebulize unit within the housing, and

a mouthpiece removably mounted to a cavity in the housing and flush withthe housing in a non-spraying state, wherein the mouthpiece isconfigured to be removed from the cavity in the non-spraying state andreinserted into the cavity in a spraying state at an angle to thehousing; the mouthpiece comprising

-   an aerosol inflow port, and-   an aerosol outflow port;-   wherein an aerosol passage is formed between the aerosol inflow port    and the aerosol outflow port, such that in a spraying state, the    aerosol enters the aerosol passage from the aerosol inflow port and    is discharged from the aerosol outflow port;-   a main air inlet is provided at a first surface of the mouthpiece,    the main air inlet being in communication with the aerosol passage;    and-   an ancillary air inlet is further provided at an opposite second    surface of the main air inlet, the ancillary air inlet being in    communication with the aerosol passage.

9. The nebulizer according to any of the preceding examples, wherein themouthpiece comprises a first end wall and a second end wall, which aredisposed opposite to each other, wherein the aerosol inflow port isdisposed at the first end wall, the aerosol outflow port is disposed atthe second end wall, and a maximum distance between the ancillary airinlet and the first end wall does not exceed 4.5 cm.

10. The nebulizer according to any of the preceding examples, wherein aminimum distance between the ancillary air inlet and the first end wallis no less than 1.2 cm.

11. The nebulizer according to any of the preceding examples, whereinthe ancillary air inlet has a D shape.

12. The nebulizer according to any of the preceding examples, wherein astopper member is provided on the second surface of the mouthpiece andextends along two ends of the ancillary inlet towards two sides of themouthpiece, respectively.

13. The nebulizer according to any of the preceding examples, whereinthe stopper member is a diverting groove or a diverting convex rib.

14. The nebulizer according to any of the preceding examples, whereinthe outer appearance of the aerosol outflow port is of a rectangular,round or oval shape.

15. A method of operating a nebulizer, the nebulizer comprising ahousing, a nebulize unit within the housing, and a mouthpiece removablymounted to a cavity in the housing and flush with the housing in anon-spraying state, wherein the mouthpiece is configured to be removedfrom the cavity in the non-spraying state and reinserted into the cavityin a spraying state at an angle to the housing; the mouthpiececomprising

-   an aerosol inflow port, and-   an aerosol outflow port;-   wherein an aerosol passage is formed between the aerosol inflow port    and the aerosol outflow port, such that in a spraying state, the    aerosol enters the aerosol passage from the aerosol inflow port and    is discharged from the aerosol outflow port;-   a main air inlet is provided at a first surface of the mouthpiece,    the main air inlet being in communication with the aerosol passage;    and-   an ancillary air inlet is further provided at an opposite second    surface of the main air inlet, the ancillary air inlet being in    communication with the aerosol passage;-   the method comprising:-   removing the mouthpiece from the cavity;-   reinserting the mouthpiece into the cavity in a spraying position;-   nebulizing the liquid with the nebulize unit into an aerosol;-   spraying the aerosol through the mouthpiece; and-   mixing the aerosol with air from the inlets.

16. The method according to any of the preceding examples, wherein themouthpiece comprises a first end wall and a second end wall, which aredisposed opposite to each other, wherein the aerosol inflow port isdisposed at the first end wall, the aerosol outflow port is disposed atthe second end wall, and a maximum distance between the ancillary airinlet and the first end wall does not exceed 4.5 cm.

17. The method according to any of the preceding examples, wherein aminimum distance between the ancillary air inlet and the first end wallis no less than 1.2 cm.

18. The method according to any of the preceding examples, wherein theancillary air inlet has a D shape.

19. The method according to any of the preceding examples, wherein astopper member is provided on the second surface of the mouthpiece andextends along two ends of the ancillary inlet towards two sides of themouthpiece, respectively, wherein the method further comprises blockingcondensate exiting the aerosol outflow port with the stopper member.

20. The method according to any of the preceding examples, wherein thestopper member is a diverting groove or a diverting convex rib.

What have been described above are only embodiments of the presentdisclosure; however, the protection scope of the present disclosure isnot limited thereto. A person skilled in the art should understand thatthe present disclosure includes, but not limited to the contentsdescribed in the drawings and the embodiments. Any modifications withoutdeparting from the functions and structural principles of the presentdisclosure will be included within the scope of the claims.

1. A nebulizer mouthpiece, comprising: an aerosol inflow port, and anaerosol outflow port; wherein an aerosol passage is formed between theaerosol inflow port and the aerosol outflow port, such that in aspraying state, the aerosol enters the aerosol passage from the aerosolinflow port and is discharged from the aerosol outflow port; a main airinlet is provided at a first surface of the mouthpiece, the main airinlet being in communication with the aerosol passage; and an ancillaryair inlet is further provided at an opposite second surface of the mainair inlet, the ancillary air inlet being in communication with theaerosol passage.
 2. The nebulizer mouthpiece according to claim 1,wherein the mouthpiece comprises a first end wall and a second end wall,which are disposed opposite to each other, wherein the aerosol inflowport is disposed at the first end wall, the aerosol outflow port isdisposed at the second end wall, and a maximum distance between theancillary air inlet and the first end wall does not exceed 4.5 cm. 3.The nebulizer mouthpiece according to claim 2, wherein a minimumdistance between the ancillary air inlet and the first end wall is noless than 1.2 cm.
 4. The nebulizer mouthpiece according to claim 1,wherein the ancillary air inlet has a D shape.
 5. The nebulizermouthpiece according to claim 1, wherein a stopper member is provided onthe second surface of the mouthpiece and extends along two ends of theancillary inlet towards two sides of the mouthpiece, respectively. 6.The nebulizer mouthpiece according to claim 5, wherein the stoppermember is a diverting groove or a diverting convex rib.
 7. The nebulizermouthpiece according to claim 1, wherein an outer appearance of theaerosol outflow port is of a rectangular, round or oval shape.
 8. Anebulizer, comprising: a housing, a nebulize unit within the housing,and a mouthpiece mounted to a cavity in the housing and flush with thehousing in a non-spraying state, wherein the mouthpiece is configured tobe positioned in the cavity in a spraying state at an angle to thehousing; the mouthpiece comprising an aerosol inflow port, and anaerosol outflow port; wherein an aerosol passage is formed between theaerosol inflow port and the aerosol outflow port, such that in aspraying state, the aerosol enters the aerosol passage from the aerosolinflow port and is discharged from the aerosol outflow port; a main airinlet is provided at a first surface of the mouthpiece, the main airinlet being in communication with the aerosol passage; and an ancillaryair inlet is further provided at an opposite second surface of the mainair inlet, the ancillary air inlet being in communication with theaerosol passage.
 9. The nebulizer according to claim 8, wherein themouthpiece comprises a first end wall and a second end wall, which aredisposed opposite to each other, wherein the aerosol inflow port isdisposed at the first end wall, the aerosol outflow port is disposed atthe second end wall, and a maximum distance between the ancillary airinlet and the first end wall does not exceed 4.5 cm.
 10. The nebulizeraccording to claim 9, wherein a minimum distance between the ancillaryair inlet and the first end wall is no less than 1.2 cm.
 11. Thenebulizer according to claim 8, wherein the ancillary air inlet has a Dshape.
 12. The nebulizer according to claim 8, wherein a stopper memberis provided on the second surface of the mouthpiece and extends alongtwo ends of the ancillary inlet towards two sides of the mouthpiece,respectively.
 13. The nebulizer according to claim 12, wherein thestopper member is a diverting groove or a diverting convex rib.
 14. Thenebulizer according to claim 8, wherein an outer appearance of theaerosol outflow port is of a rectangular, round or oval shape.
 15. Amethod of operating a nebulizer, the nebulizer comprising a housing, anebulize unit within the housing, and a mouthpiece removably mounted toa cavity in the housing and flush with the housing in a non-sprayingstate, wherein the mouthpiece is configured to be positioned in thecavity in a spraying state at an angle to the housing; the mouthpiececomprising an aerosol inflow port, and an aerosol outflow port; whereinan aerosol passage is formed between the aerosol inflow port and theaerosol outflow port, such that in a spraying state, the aerosol entersthe aerosol passage from the aerosol inflow port and is discharged fromthe aerosol outflow port; a main air inlet is provided at a firstsurface of the mouthpiece, the main air inlet being in communicationwith the aerosol passage; and an ancillary air inlet is further providedat an opposite second surface of the main air inlet, the ancillary airinlet being in communication with the aerosol passage; the methodcomprising: positioning the mouthpiece into the cavity in the sprayingstate; nebulizing a liquid with the nebulize unit into an aerosol;spraying the aerosol through the mouthpiece; and mixing the aerosol withair from the inlets.
 16. The method according to claim 15, wherein themouthpiece comprises a first end wall and a second end wall, which aredisposed opposite to each other, wherein the aerosol inflow port isdisposed at the first end wall, the aerosol outflow port is disposed atthe second end wall, and a maximum distance between the ancillary airinlet and the first end wall does not exceed 4.5 cm.
 17. The methodaccording to claim 16, wherein a minimum distance between the ancillaryair inlet and the first end wall is no less than 1.2 cm.
 18. The methodaccording to claim 15, wherein the ancillary air inlet has a D shape.19. The method according to claim 15, wherein a stopper member isprovided on the second surface of the mouthpiece and extends along twoends of the ancillary inlet towards two sides of the mouthpiece,respectively, wherein the method further comprises blocking condensateexiting the aerosol outflow port with the stopper member.
 20. The methodaccording to claim 19, wherein the stopper member is a diverting grooveor a diverting convex rib.